Init basic cluster

ansible/hosts

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+[openwrt]
+2001:470:61a3:100:ffff:ffff:ffff:ffff ansible_scp_extra_args="-O"

ansible/playbook.yml

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+- name: Configure router
+  hosts: openwrt
+  remote_user: root
+  roles:
+    - ansible-openwrt
+    - router

ansible/roles/router/files/bird.conf

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+# Would never work without this awesome blogpost
+# https://farcaller.net/2024/making-cilium-bgp-work-with-ipv6/
+
+log "/tmp/bird.log" all;
+log syslog all;
+
+#Router ID
+router id 192.168.1.1;
+
+protocol kernel kernel4 {
+    learn;
+    scan time 10;
+    merge paths yes;
+    ipv4 {
+        # Importing only default route, we're their default gateway so they dont need rest
+        import filter { if net = 0.0.0.0/0 then { igp_metric = 100; accept; } reject; };
+        export all;
+    };
+}
+
+protocol kernel kernel6 {
+    learn;
+    scan time 10;
+    merge paths yes;
+    ipv6 {
+        import filter { if net = ::/0 then { igp_metric = 100; accept; } reject; };
+        export all;
+    };
+}
+
+protocol device {
+    scan time 10;
+}
+
+protocol direct {
+    interface "*";
+}
+
+protocol bgp homelab {
+    debug { events };
+    passive;
+    direct;
+    local 2001:470:61a3:100:ffff:ffff:ffff:ffff as 65000;
+    neighbor range 2001:470:61a3:100::/64 as 65000;
+    ipv4 {
+        extended next hop yes;
+        import all;
+        export all;
+    };
+    ipv6 {
+        import all;
+        export all;
+    };
+}

ansible/roles/router/handlers/main.yml

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+- name: Reload bird
+  service:
+    name: bird
+    state: restarted
+    enabled: true

ansible/roles/router/tasks/main.yml

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+---
+- name: Install bird2
+  opkg:
+    name: "{{ item }}"
+    state: present
+  # Workaround for opkg module not handling multiple names at once well
+  loop:
+    - bird2
+    - bird2c
+
+- name: Set up bird.conf
+  ansible.builtin.copy:
+    src: bird.conf
+    dest: /etc/bird.conf
+    mode: "644"
+  notify: Reload bird